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These instructions are intended for machines that have had a PCI USB card installed after Mac OS installation has occurred, or one running 9.2 without built-in USB ports. The extensions that come with 9.2 have a bug, causing them to not work on Macs without built-in USB. The card and devices plugged into it will appear in System Profiler but will not function, and do not disappear until the machine is restarted.
StarTech.com PEXUSB314A2V USB 3.1 PCI-e Card – 4 Port – 4x USB-A with Two 10Gbps Dedicated Channels – Expansion Card – USB 3.1 card. Type: PCI Express Controller Card External USB Ports: 4 x USB 3.1 USB Type-A (9 pin, Gen 2, 10 Gbps) Female Internal Ports: 1 x LP4 (4-pin, Molex Large Drive Power) Male 1 x SATA Power (15-pin) Plug Standard: USB 3.1 Specification Rev. Inateck 2 Port PCIe USB 3.0 Card with Internal USB 3.0 20-Pin Connector - Expand Another Two USB 3.0 Ports, Compatible Mac Pro, No Additional Power Connection Needed Inateck PCI-e to USB 3.0 (4 Ports) PCI Express Card and 15-Pin Power Connector, Red (KT4001).
In 9.1 you could also run the installer again, select Add/Remove, and add in USB Adapter Card Support. This is located in Mac OS 9.1>Network & Connectivity when doing a customized installation.
You will need
- A Macintosh with a working Mac OS 9.1 or 9.2 installation (See note 1 for prior versions)
- One PCI USB Card that’s OHCI compliant, installed in the Mac. The vast majority of PCI USB 1.1/2.0 cards support OHCI.
- Theoretically any OHCI-compliant card will work, but certain configurations are problematic (See note 2)
- Note that a USB2.0 card will not work at 2.0 speeds as OS8/9 do not support EHCI
- Mac OS 9.1, either a retail CDROM or the 9.1 update
- Insert your OS 9.1 disc or extract the 9.1 update and open the “Installation Tome” file
- This is located in Software Installers/System Software/Mac OS 9.1
- Extract these files from the tome, placing them on your desktop.
- HID Library
- Serial ShimLib
- USB Device Extension
- USB Mass Storage Support
- USB Software Locator
- USB Support
- Skip to step 4 unless you’re running 9.2. You’ll need to remove the preinstalled versions of these files from your Extensions folder (in your System Folder.) Create a folder on your desktop and place them inside.
- Drag the files you extracted onto the System Folder. You should receive a dialog box asking you to confirm placing them in the Extensions folder, click OK. Alternatively you can place the files directly in the Extensions folder.
- Reboot. USB should now be working. You may trash the extensions you removed (if on 9.2)
Usb 3 Pci Card For Mac
- Apple provided USB Adapter Card Support 1.4.1 as a separate installer for 8.6-9.0. You may still be able to use the versions extracted from 9.1, however.
- All OHCI cards are supposed to work.
- I’ve had the best luck with NEC, Lucent, and OPTi-based cards. I’d stay away from VIA
- I could not get any USB 2.0 cards to function in a PowerMac 6500. I suspect this might have something to do with PCI 2.2, but I’m not sure. Please comment with your results.